129011 has 2 divisors, whose sum is σ = 129012. Its totient is φ = 129010.

The previous prime is 129001. The next prime is 129023. The reversal of 129011 is 110921.

It is a weak prime.

It is an emirp because it is prime and its reverse (110921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129011 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64505 + 64506.

It is an arithmetic number, because the mean of its divisors is an integer number (64506).

2¹²⁹⁰¹¹ is an apocalyptic number.

129011 is a deficient number, since it is larger than the sum of its proper divisors (1).

129011 is an equidigital number, since it uses as much as digits as its factorization.

129011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 129011 is about 359.1810128612. The cubic root of 129011 is about 50.5291796204.

Adding to 129011 its reverse (110921), we get a palindrome (239932).

The spelling of 129011 in words is "one hundred twenty-nine thousand, eleven".